Yes,it the power supply board.If u know basic electronic's,have tools and know how to do basic soldering?Take the tv aparts.The tv power supply board,that the board,where the power a/c cord plug into it.Searches the power supply board,look for those dying leakages of gases,going to be dead parts call capaitors.They alway bulges up on it tops or puffing up on it tops.Replaced these dying,going to be dead capacitorsThe tv power will be stable again and work.Or tries Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Those websites will discribe the tv make and model.Display the picture of the board,u should compare it to look like ur original board,before,if u going to buy it,what the board look like and the priced beside it.Buying and replacing the power supply board,will not guarantee 100% ur tv will be fixed ok.Brake it down in percentage of ur problems,90% power supply board.5% could be the Tuner board itself,the board where incoming broscating signal connect to it.5% it could be both power and the Tuner board. Those websites will discribe the tv make and model.Display the picture of the board,u should compare it to look like ur original board,before,if u going to buy it,what the board look like and the priced beside it.Buying and replacing the power supply board,will not guarantee 100% ur tv will be fixed ok.Brake it down in percentage of ur problems,90% power supply board.5% could be the Tuner board itself,the board where incoming broscating signal connect to it.5% it could be both power and the Tuner board.

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Yes, you are correct. there are a few component issues on the power circuit board that will need to be replaced. the mani component will be the capacitors and transistors.if not repaired soon, this unit will completely stop working.